Explain why 9 is the best whole number estimate of 83−−√.

83 is between 82 and 85, and 83 is closer to 82 than it is to 85.

√83 is a perfect square

9 is a perfect square.

83 is between 81 and 100 and 83 is closer to 92 than it is to 102.

the first answer

Step-by-step explanation:

83 is between 82 and 85, and 83 is closer to 82 than it is to 85.

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.